PROBLEM TO BE SOLVED: To enable a material to be scattered in a hopper to flow down precisely to a scattering part regardless of the shape of a hopper mounted on a fertilizer-scattering apparatus.SOLUTION: Fertilizer 105 stored in the hopper 102 drops from a bottom opening 102B of the hopper 102 opened and closed by a shutter part 104 to a scattering part 103, and is scattered therefrom. A rotary boss-supporter 151 arranged in the hopper 102 has a first shaft part 204 extended upward from the bottom opening 102B, a first supporting part 152 extended horizontally so as to be orthogonal thereto, and a second shaft part 153 protruded therefrom so as to be parallel to the first shaft part 204. A rotary boss 154 is installed in the second shaft part 153 so as to be freely rotatable in the revolving direction. The terminal part of an arm 158 extended in the aslant upper direction from the rotary boss 154 is connected to a rail body 109 crossing the upper side of an inner wall of the hopper 102 so as to be freely slidable. A bridge-preventing body 160 is extended from the rotary boss 154, and swung horizontally accompanied by the rotation of the first shaft part 204 to approach or detach to or from the inner wall 102a.COPYRIGHT: (C)2011,JPO&INPIT【課題】肥料散布装置に備わるホッパの形状を問わずに、このホッパ内の被散布物を確実に散布部へ流下させる。【解決手段】ホッパ102に収容される肥料105は、シャッタ部104により開閉されるホッパ102の底部開口102Bから散布部103に落下しそこから散布される。ホッパ102内に配置される回転ボス支持体151は、底部開口102Bから上方に延びる第1軸部204と、これに対して直交するように水平方向に延びる第1支持部152と、これから第1軸部204と平行に突出する第2軸部153とを有する。第2軸部153には回転ボス154が周回方向に回転自在に設けられる。回転ボス154から斜め上方に延びるアーム158の端部は、ホッパ102の内壁の上方を横切るレール体109にスライド自在に連結する。ブリッジ防止体160は回転ボス154から延出し、第1軸部204の回転に伴って水平方向に揺動し内壁102aに近接離反する。【選択図】図2
